Called my mobile twice but left no message

Called trying to sell me an upgrade to my security system.  Responded 5 times that I was very happy with my current system, but wouldn't give it up, eventually hung up.

Called wanting to talk about a personal matter. Did not know him or who referred him to this number.

Got the call but ignored it thanks to seeing the information on this page.

Called during the British Open.....so of course I didn't answer and obviously an offshore scam. Lots of these types of calls this weekend.....they all must be below quota!